33 Neurogenic Ptosis: Evaluation and Management

Kimberly K. Gokoffski, Vivek R. Patel

Abstract

In this chapter, we discuss neurogenic ptosis using an anatomical approach. Neurogenic forms of ptosis are important to recognize; in fact, in some cases ptosis is a key sign leading to the diagnosis of a life-threatening condition. The neuroanatomical circuitry is well characterized; however, following damage, interesting and complex reorganization can take place. Accurate diagnosis and appropriate intervention depends on a solid understanding of the underlying pathophysiology of these aberrant regeneration syndromes. We will cover the most common of these entities here, with representative examples throughout.

Key words

neurogenic ptosis - Horner’s syndrome - myasthenia gravis - third nerve palsy - aberrant innervation